M. Yu. Konon, F. K. Klyushev, D. P. Danilovich, E. A. Semenova, L. F. Dikaya
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Abstract
Glass of the composition (mol %, as synthesized) 6Na2O·18B2O3·70SiO2·6Ni2O3, heat-treated at 550°C for 96 h is studied using scanning electron microscopy, and its chemical stability to an aqueous 3 M HCl solution is also studied. It is established that this glass has an interconnected phase-separated structure. The general nature of its leaching process is controlled by diffusion. Compared to iron-containing glass of a similar composition, the extraction rate of Na2O and B2O3 is reduced by a factor of 2. Nickel oxide is predominantly found in the chemically unstable glass phase, most of it passing into the leaching solution. The suitability of nickel-containing phase-separated glass for producing porous glass with through porosity (~30%) is demonstrated.
用扫描电镜研究了合成组分（摩尔%）6Na2O·18B2O3·70SiO2·6Ni2O3的玻璃在550℃下热处理96 h，并研究了其在3 M HCl水溶液中的化学稳定性。结果表明，该玻璃具有相互连接的相分离结构。其浸出过程的一般性质受扩散控制。与相同成分的含铁玻璃相比，Na2O和B2O3的提取率降低了2倍。氧化镍主要存在于化学性质不稳定的玻璃相中，大部分进入浸出液。结果表明，含镍相分离玻璃适用于制备孔隙率为~30%的多孔玻璃。
期刊介绍：
Glass Physics and Chemistry presents results of research on the inorganic and physical chemistry of glass, ceramics, nanoparticles, nanocomposites, and high-temperature oxides and coatings. The journal welcomes manuscripts from all countries in the English or Russian language.
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